Check the library holdings at CiNii books and NDL Search.

check-book-c4ljp.rb

#!/usr/bin/env ruby
# -*- coding: utf-8 -*-

require "uri"
require "open-uri"
require "rexml/document"
require "rexml/xpath"

baseurl = {
  :NDL => "http://iss.ndl.go.jp/api/opensearch",
  :CINII => "http://ci.nii.ac.jp/books/opensearch/search",
}
NS_MAPPING = {
  "opensearch11" => "http://a9.com/-/spec/opensearch/1.1/",
  "opensearch10" => "http://a9.com/-/spec/opensearchrss/1.0/",
}

if $0 == __FILE__
  q = ARGV[0] || "isbn=978-4-8204-1219-9"
  baseurl.each do |k, u|
    url = u + "?format=rss&#{ URI.escape q }"
    cont = open( url ){|io| io.read }
    doc = REXML::Document.new( cont )
    root = doc.root
    total_e = REXML::XPath.first( doc, "//opensearch11:totalResults", NS_MAPPING )
    total_e = REXML::XPath.first( doc, "//opensearch10:totalResults", NS_MAPPING ) if total_e.nil?
    total = total_e.text.to_i
    #p items
    if total > 0
      puts "[#{ k }] #{ total } hits:"
      root.elements.each( "//item" ) do |item|
        url = item.elements[ "./link" ].text
  case k
	when :CINII, :NDL
	   cont = open( url + ".rdf" ){|io| io.read }
           #puts cont
	   rdf = REXML::Document.new( cont )
           authors = rdf.elements.to_a( "//dc:creator" )
           authors_s = authors.map{|e| e.first }.join( ", " )
           title = rdf.elements[ "//dc:title" ]
           title = if title.elements[ "//rdf:value" ]
                      title.elements[ "//rdf:value" ].text
                   else
                      title.text
                   end
           puts [ authors_s, title ].join( ": " )
	   owners = []
	   owners = rdf.root.elements.to_a( "//bibo:owner" ) if k == :CINII
	   owners = rdf.root.elements.to_a( "//dcndl:holdingAgent" ) if k == :NDL
	   owners.each do |owner|
	      puts "# " << owner.elements.to_a( ".//foaf:name" ).first.text
	   end
	   puts [ url, "#{ owners.size } holdings." ].join( " - " )
        else
	   puts url
	end
      end
    end
  end
end